Draft arm for soda fountains



Patented May 8, 1928.

UNITED STATES lui'ri-:ixrry omer..

` TULLY DE s'rnrANI, or CHIOAGO., ILLINOIS, AssIGNOR To LIQUID cAnBoNIo OO., or

CHICAGO, ILLINOIS, A CORPORATION or rLLrNOIs.

DRAFT ARM FOR SODA FOUNTAINS.

Application mea man 29, 192e.` .serial jm. 98,263.

a draft arm for a soda fountain in which any i liquid retained in the draft arm, which 'has previously been drawn from a cold supply,`

will remain cold while in the draft arm, so that when Vthe next dri-nl;` is to be served, the liquid in the draft arm will emerge in a cool state.

A further object of the invention is to provide a draft arm having a block tin tube through which the liquid passes, with a metal casing surrounding this tube and spaced therefrom, so as to givethe appearance of a solid arm, means being provided 'to fill the intervening space with heat insulating material.

A further object ofthe invention is to pro vide a draft arm of artistic appearance and having a look of solidity, but which is made of sheet metal, whereby the cost' is cut down, without, however, sacrificing the appearance or utility. p

Other objects and advantages will appear' in the following specification, and the novel features of the invention will be particularly pointed out in the appended claim.

My invention is illustrated in the accompanying drawings, forming part of this application, in which Figure 1 is a central sectional view through the draft arm, the discharge head being shown in elevation, and

Figure 2 is an enlarged section along the line 2-2 of Figure 1.

In carrying out my invention, I make use of a base portion 1 which is preferably a casting of circular contour. It is provided with an annular flange 2 on the upper side having an annular groove 3 concentric with the central axis of the casting. The bottom portion of the casting has a recess 4. The central portion of the castingconsists of a stem 5 which is threaded at 6, and which has a central bore arranged to receive the end of a block tin tube 7.

At the upper end of the draft arm, is a member 8 also having an annular recess 9 on one side and a threaded reduced portion 10 on the opposite side, the latter being arranged to receive the threaded connection 11 of a discharge head Vl2. The block tin tube, :as will be seen, extends centrally of the .device and is bent laterally and enters a bore in the member 7.`

The outer portion of the draft arm con- Y Vsistsof stamped sheet metal. In Figure 2, `1t. will beseenfthat there vare two stampings 13 and 14, respectively, which are joined` together to form the outer portion of the arm. Thesestampm s shave offset angular portions, such ast ose shown at lland 14a, at l the corners of the rectangle, formed when the pieces. are put together. There are similar offset portions 14 and 13b provided at adjacent corners of the rectangle. When these sheet metal stampings are placed together, as shown in Figure 2, `it will be observed that the portions 14b of one of them overlap the portions 13? of the other. These overlapped portions are soldered together so that the casmg has the appearance of a rectangular form u with flattened corners. It will further be noted that the device tapers from the bottom to the top.

In Figure 1, the sectionis taken through the overlapping portions 14h and 13".` The bottom edge of the casing thus formed is disposed in the annular groove 2 at the bottom, while the upper edge is disposed in the annular groove or recess 9, being preferably soldered therein so as to make a rigid construction. After the casing has been aiiixed to the bottom and top portions, the exterior is preferably plated to give it a finished appearance. It will be observed that there is an o ening 15 in the base 1. This opening is or the purpose of introducing heat-insulating material 17 into the space between the casing and the block tin tube 7. The material which I preferably use is ground cork. When the interior of the arm has been filled, the hole is closed by a plug 16.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. The base is designed to rest on the top of a counter or table, not shown, and the tube 6 is designed` to be connected with a suitable source of supply of cooled liquid. The con-` liquid rises through the block tin tube, but

does not come in contact with the other metals which might contaminate it, and

when the handle is turned, the liquid is y forced out of the nozzle 19. When the handle is turned .to shut off the flow, there Will be liquid in the draft arm, but this Will be kept cool by the heatinsulating substance, so that When the next drink is served, the first HOW of liquid Will be in a cool condition. The fact that the exterior portion of the arm is made of sheet metal makes it light in comparison with solid castings, `and also cuts down the expense of making the arm, without decreasing its utility, or sacrificing appearance, which is that of a solid piece.

I claim: Y

In a draft arm for soda fountains, a base member, a top port-ion, a liquid-conveying tube extending through said base member and said top portion, a sheet metal casing comprising a pair of stamped out portions provided with longitudinally extending out- Wardly projecting fiat vreinforcing portions positioned adjacent the centers and extending the full length thereof, one of said stamped out portions being provided with longitudinally extending outwardly projecting flat reinforcing portions positioned at the connecting edges and extending the full length thereof for receivingthe longitudinal edges of the other stamped out portion, the ends of said sheet metal portions being secured to said base member and to said top portion, respectively, said base member being provided with an o enin a heat insulating material passed t roug said opening and disposed between said casing and said tube, and a plug for said opening.

TULLY DE STEFAN I. 

